PWM a Mains Powered Motor ESP

Projects General Guidance
1

How do i go about controlling a mains powered motor like this one, it's 60W 220V:

vibration-motor-single-phase
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The cables are Live Neutral Earth but seems to have a small box inline, is it possible this motor is a 12V DC and the box is a transformer or rectifier?

vibration-motor-single-phase-cables
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Assuming it is mains powered, how can i control the motor with a motor board like i would a 12VDC with e.g L298N Motor Controller, are there any motor controllers for mains power?

I know i can buy a motor controller dial (assuming a potentiometer inside ?) but i want to be able to control the speed with an ESP32/ESP8266 via PWM.

I also have a relay module for an old arduino project, would switching speed be an issue?

Thanks

2

We cannot answer that for you, without more links or a datasheet. But I would say probably not, the box looks too small and has a plastic case. An AC to DC adapter would probably be larger and have a metal case for heat dissipation.

Yes, and some of them might have PWM inputs that you could use with ESP32, but you must check carefully before you buy. Maybe post a link here to a controller and we can advise if it will be suitable, and safe.

3

You cannot control the speed of a motor with a relay.

4

OK, thanks Paul

"I hope the farmer doesn't mind us mixing together.."

5

The internet doesn't transmit those sorts of viruses, so our bio-security measures should be enough.

6

Bird flu, swine flu, it's all the same!

7

It may be an induction motor in which case it can't be speed controlled. What sort of noise does it make? Can you hear any commutator whine?

8

This may be of interest

9

Fans often use induction torque motors which can be slowed down by varying the supply volts.

10

I haven't bought it yet, i am looking to but it's pointless unless i can control the speed with microcontroller remotely, there is a version on ebay that has a speed controller but i am not sure of what's inside, a potentiometer or something else?

11

thanks paul, i will check the video out later, i may have to look for a similar motor that is 12V

12

Nothing is ever pointless if you learn from it!

13

I haven't bought it yet, i am looking to but it's pointless unless i can control the speed with microcontroller remotely

i agree with getting stuck in, finding out and learning something but spending £45 on a motor that might end up in the parts bin because i can't use it, is worth doing a bit of research first

14

If you look at their EBAY ad, there is a LOT more information, including the type of motor.

15

Ah, the US ad has a lot more information yes, but what am i missing, i cannot see the type of motor, i see pure copper coil?

16

Read the text!

17

i have, i am not sure exactly what i am looking for..

18

oh ok "Asynchronous Motor" ?

19

And the number of poles. You only have them with AC motors.

20

And the rotation speed is a function of the AC frequency!